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FREE SCIENCE AND STUDY GAMES ABOUT CHAPTER 1
REVEIW EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -30 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: Adding a(n) ________ to a neutral atom produces a new element.
Answer:
Proton.
Question 2: The modern model of an atom is called the ______ model.
Answer:
Electron-cloud
Question 3: Uncharged particle in the nucleus of an atom...
Answer:
Neutron
Question 4: Ions which have a positive or negative ________.
Answer:
Charge
Question 5: Atoms have a region surrounding the central area called the _____.
Answer:
Electron cloud
Question 6: Nucleus contains particles called the _____ and ______.
Answer:
Proton and Neutron
Question 7: Same number as the protons.
Answer:
Atomic number Question 8: One or more atoms of an element having the same number of protons but a different number of neutrons...
Answer:
Isotope
Question 9: Which particle in an atom has no charge?
Answer:
The neutron Question 10: An atom that has a charge because It has gained or lost electrons...
Answer:
Ion
Question 11: An ion has a charge because it has gained or lost...
Answer:
Electrons Question 12: Region surrounding an atom's nucleus where one or more electrons are often found...
Answer:
Electron cloud
Question 13: What is the difference between a heterogeneous mixture and a homogeneous mixture?
Answer:
A heterogeneous mixture is not evenly mixed while a homogeneous mixture is evenly mixed but not bonded together.
Question 14: A ______ ion has more protons than electrons.
Answer:
Positive Question 15: Region at the center of an atom that contains most of the mass of an atom
Answer:
Nucleus
Question 16: What is another word for a homogeneous mixture?
Answer:
Solution
Question 17: The nucleus has a _______ charge and the ______ mass of the atom.
Answer:
Positive, Most
Question 18: Where is most of the mass of an atom found?
Answer:
In the nucleus Question 19: An electron is a ________ charged particle located outside the nucleus.
Answer:
Negatively
Question 20: The number of protons in the nucleus of an atom of an element...
Answer:
Atomic number
Question 21: The atomic number is the number of ______ in the nucleus of an atom of an element.
Answer:
Protons Question 22: Negatively charged particle that occupies the space in an atom outside the nucleus...
Answer:
Electron
Question 23: Atoms have a central region called...
Answer:
Nucleus
Question 24: The nucleus of an atom contains _______ and neutrons.
Answer:
Protons
Question 25: Which particle in an atom has a positive charge?
Answer:
The proton Question 26: Electrons that are close to the nucleus have _____ energy than electrons that are farther from the nucleus.
Answer:
Less
Question 27: Isotopes have the same number of protons but different numbers of.
Answer:
Neutrons
Question 28: Atoms that have gained or lost electrons become _______.
Answer:
Ions
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